(ninja) Update doc related to java version (#246)

Co-authored-by: Antonio Murgia <antonio.murgia@agilelab.it>

Author: tmnd1991

CONTRIBUTING.md

@@ -31,7 +31,7 @@ skip these steps and jump straight to submitting a pull request.
 
 # IDE setup
 
-To get started with Whitefox development, you need JDK 11 installed. Since the project is managed with Gradle, any 
+To get started with Whitefox development, you need JDK 17 installed. Since the project is managed with Gradle, any 
 IDE that works with Gradle v8.3 will be a good fit. We internally use IntelliJ IDEA Community Edition.
 
 # Protocol

docsite/docs/development_guidelines.md

@@ -4,7 +4,7 @@
 
 To get started you need:
 
-- JDK 11 installed
+- JDK 17 installed
 
 alternatively a recent IntelliJ IDEA Community Edition version is enough.
 
@@ -16,13 +16,13 @@ Gradle I kindly suggest to start from [its awesome docs](https://gradle.org/guid
 The server is [quarkus](https://quarkus.io) application that exposes a REST API implementing Whitefox and 
 delta-sharing protocol. If you never worked with Quarkus, have a look at [its awesome doc](https://quarkus.io/get-started/).
 
-The app is developed and run for JVM 11 because hadoop libraries (which are a dependency of delta-lake kernel) do 
-not run properly on newer versions of the JVM.
+The app is developed and run for JVM 17, even if hadoop libraries (which are a dependency of delta-lake kernel) are 
+not certified to run on JDK > 11 we are not encountering any issue so far.
 
 As soon as you clone the project you should verify that you are able to build and test locally, to do so you need to 
 run the `check` command of Gradle, you can achieve that using either `gradlew` script in the project root (`.
 /gradlew check`) or run the same [gradle task from intellij](https://www.jetbrains.com/help/idea/work-with-gradle-tasks.html).
-If you're default jvm is not version 11, you can run `gradlew` passing another java home as follows: 
+If you're default jvm is not version 17, you can run `gradlew` passing another java home as follows: 
 `./gradlew -Dorg.gradle.java.home=<PATH_TO_JAVA_HOME> build`.
 
 Sometimes IntelliJ will tell you have build errors, especially when moving from one branch to the other. The problem